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অসীম স্যার
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-১০ঃ যোগজীকরণ
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f
(
x
)
=
{
x
+
1
for
x
<
0
cos
π
x
for
x
≥
0
f(x)=\left\{\begin{array}{ll}x+1 & \text { for } x<0 \\\cos \pi x & \text { for } x \geq 0\end{array}\right.
f
(
x
)
=
{
x
+
1
cos
π
x
for
x
<
0
for
x
≥
0
হলে-
i.
∫
−
1
−
1
/
2
f
(
x
)
d
x
=
1
8
ii.
∫
0
1
f
(
x
)
d
x
=
0
iii.
f
(
−
1
)
=
1
\begin{array}{l}\text{i. }\int_{-1}^{-1 / 2} f(x) d x=\frac{1}{8}\\\text{ii. } \int_{0}^{1} f(x) d x=0\\\text{iii. } f(-1)=1\end{array}
i.
∫
−
1
−
1/2
f
(
x
)
d
x
=
8
1
ii.
∫
0
1
f
(
x
)
d
x
=
0
iii.
f
(
−
1
)
=
1
নিচের কোনটি সঠিক?
A.
i ও ii
B.
i ও iii
C.
ii ও iii
D.
i, ii ও iii
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